CHAPTER II. THEORIES OF COMPOUNDING IN ENGLISH 2.1. Definition and criteria for compoundhood 2.1.1. What is compound? 2.1.2. Criteria of compoundhood 2.1.2.1. A phonological criterion 2.1.2.2. The inseparability test 2.1.2.3. Compound words versus syntactic phrases 2.1.2.4. Compound-internal inflection 2.1.2.5. The interfix 2.1.2.6. Right- and left-headedness in compounding 2.1.2.7. Recursiveness 2.1.2.8. Other criteria for compoundhood 2.2. Classification of compounds 2.2.1. Root compounds 2.2.2. Synthetic compounds 2.2.3. Phrasal compounds 2.3. The relevance of headedness and percolation for the mo rpho-semantics of endocentric and exocentric compounds 2.3.1. The head of a compound 2.3.2. Morphosyntactic feature percolation 2.3.3. The position of the head and other head-related issues 2.4. An overview of word-formation approaches within the generative framework and their relevance for compounding 2.4.1. The place of compounding in the Lexicalist Hypothesis 2.4.1.1. The status of an affix in the Lexicalist Theory 2.4.1.2. Syntactic models ol word formation 2.4.1.3. Lexicalist and 'half-lexicalisf theories of word formation 2.4.2. Synthetic compounds: an overview of approaches